Vulnerability of the Nigerian coast: An insight into sea level rise owing to climate change and anthropogenic activities

Danladi, Iliya Bauchi; Kore, Basiru Mohammed; Gül, Murat

doi:10.1016/j.jafrearsci.2017.07.019

Cited by 34 publications

(9 citation statements)

References 23 publications

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“…The researchers highlighted that between 2010 and 2012, erosion dominated accretion, with a total of 9.1 km 2 of deltaic land lost to shoreline erosion at an average rate of 4.55 ± 1.21 km 2 /year [86]. Again, Danladi et al [87] found remarkable erosion along the coastal regions of Lekki, Nigeria.…”

Section: Shoreline Change and Coastal Erosion Due To Natural Eventsmentioning

confidence: 99%

“…Along the Volta River estuary in Ghana, Appeaning Addo et al [90] suggested to authorities the need for effective management approaches such as developing disaster risk reduction strategies as well as increasing the resilience and adaptive capacity of the communities along the estuary. Similarly, in Lekki, Nigeria, Danladi et al [87] alluded to policymakers about the need for continuous inspection of the entire Lekki coast and the construction of environmentally friendly coastal defenses like dune barriers and sand replenishment. Again, in the Eti-Osa local government area of Victoria Island, Nigeria, Adeaga et al [92] mentioned to authorities the need to institute appropriate land use and land cover management plans for the area.…”

Section: More Erosion Along Thementioning

confidence: 99%

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Shoreline Change and Coastal Erosion in West Africa: A Systematic Review of Research Progress and Policy Recommendation

2023

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Shoreline change and coastal erosion resulting from natural events such as sea level rise and negative anthropogenic activities continue to be problems in many of the world’s coastal regions. Many coastal socio-ecological systems have become vulnerable as a result, especially in developing countries with less adaptive capacity. We utilized the systematic method to understand the research progress and policy recommendations on shoreline change and coastal erosion in West Africa. A total of 113 documents were retrieved from Scopus and the Web of Sciences databases, and 43 documents were eligible following established criteria. It was revealed that research on shoreline change and coastal erosion has progressed substantially since 1998, with most research studies originating from the Ghanaian territory. Again, most of the shoreline change and erosion problems in West Africa result from natural events such as sea level rise. However, there was evidence of anthropogenic influences such as sand mining, dam construction, and human encroachment causing shoreline change and erosion in the region. Research in the region has also progressed in terms of methodological approaches. Since 2004, researchers have utilized remote sensing and GIS techniques to source and analyze shoreline change and erosion. However, a combination of remote sensing and field observation approaches is required to clearly depict the erosion problems and aid policy direction. The overall call to action regarding policy recommendations revolves around improving coastal adaptation measures and the resilience of communities, instituting proper coastal zone management plans, and improving shoreline change and coastal erosion research. To protect lives and property, policymakers in the region need to set up good coastal zone management plans, strengthen adaptation measures, and make coastal communities more resistant to possible risks.

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Section: Shoreline Change and Coastal Erosion Due To Natural Eventsmentioning

confidence: 99%

Section: More Erosion Along Thementioning

confidence: 99%

Shoreline Change and Coastal Erosion in West Africa: A Systematic Review of Research Progress and Policy Recommendation

2023

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“…Climatic conditions in this region make the acquisition of cloud-free optical imagery challenging, hence the attractiveness of imagery from all-weather SAR systems. While the Niger Delta region has a lot of oil and gas activities [58][59][60], there are various issues that require environmental monitoring in the area, such as oil spills [61][62][63] and sea level rise [2,64,65]. There are ranging levels of vulnerabilities to the Niger Delta coastline [2,53,54,65,66], which may be attributed to the fact that the Niger Delta coastline is low-lying, as reported by the IPCC [67].…”

Section: Study Sitementioning

confidence: 99%

Shoreline Delineation from Synthetic Aperture Radar (SAR) Imagery for High and Low Tidal States in Data-Deficient Niger Delta Region

Dike,

Oyetunji,

Amaechi

2023

JMSE

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Satellite image analysis is a potentially powerful tool for monitoring coastal shoreline positions. This study explores the use of multi-temporal, dual-polarised Sentinel-1 GRD synthetic aperture radar (SAR) imagery with a spatial resolution of 10 m for delineating shorelines. It was conducted in a data-deficient and complex environment (the Niger delta of Nigeria), in a developing country with a cloud-heavy climate. The study focuses on exploring and testing the capability of using multitemporal waterlines from SAR images to derive shoreline positions at high and low tidal states. From 54 Sentinel-1 images recorded in 2017, the study selected 12 images to represent both high and low tidal states. These were spread across the wet and dry seasons in order to account for seasonal differences. Shoreline positions were obtained by identifying the land–water boundary via segmentation using histogram-minimum thresholding, vectorizing and smoothing that boundary, and averaging its position over multiple waterlines. The land–water segmentation had an overall accuracy of 95–99%. It showed differences between wet and dry season shoreline positions in areas dominated by complex creek networks, but similarities along open coasts. The SAR-derived shorelines deviated from the reference lines by a maximum of 43 m (approximately four pixels), and often less than 10 m (one pixel) in most locations (open coast, estuarine, complex creek networks) at high and low tides, except low tide lines in areas with extensive inter-tidal flats at shorelines 70 m to 370 m from the reference lines. However, for applications such as coastal vulnerability assessment, the high tide shoreline is of greater importance. Thus, depending on the application of interest, problems with low tide shoreline delineation may be irrelevant. Despite limitations, notably the relatively small number of images available that were recorded at high or low tide, the method provides a simple, objective, and cost-effective approach to monitoring shorelines at high and low tide.

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“…In eastern Ghana, close to the border with Togo, rates of erosion of up to 3.9 m/year have been recorded (Boateng 2012), and up to 4 meters/year has been recorded along parts of Benin's coastline (World Bank 2019). High rates of erosion have also been observed near the Lekki lagoon, along Nigeria's lagoon-barrier coast (Danladi et al 2017). At all these locations, rates of erosion are often exacerbated by the loss of mangroves (Diop and Sherin 2016;Boateng 2018), and in a negative feedback loop, coastlines with high erosion rates often experience increased mangrove loss as the root structures of the plant become compromised due to the loss of substrate through erosion.…”

Section: Impacts Of Climate Change On Lagoons and Lagoon Communities Sea Level Risementioning

confidence: 99%

Climate Change Impact and Adaptation: Lagoonal Fishing Communities in West Africa

Davies-Vollum

Raha

Koomson

2021

African Handbook of Climate Change Adaptation

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Lagoons are a common feature of the low-lying West African coastline. These lagoons are resource-rich and biodiverse. The small-scale fishing communities, which border them, are dependent on the resources and ecosystem services for their livelihoods and well-being. Climate change has had significant and diverse effects on both the lagoons and their surrounding communities. Sea level rise has caused erosion of the coast and increased the risk of floods. Changes to rainfall patterns have caused shifts in lagoon ecosystems and physical cycles. Of particular relevance to lagoon fishing communities is the fluctuation in quantity and distribution of fish catch that they rely upon for economic livelihood. Understanding the vulnerability of these communities to the effects of climate change is critical to supporting and developing successful adaptations. Using a case study from Ghana, sustainable livelihoods approach (SLA) and vulnerability framework are used to characterize the community vulnerability, giving insight into the temporal and spatial dynamics of vulnerability and how subsections of the community may be identified and prioritized for adaptation interventions. A scalar analysis of the relevant coastal and environmental frameworks and policy to support climate change adaptation in coastal communities reveals the common challenges in implementing adaptation interventions and strategies in the region. A policy gap exists between high level, institutional coastal, and climate directives and implementation of climate adaptations at the local level. That gap might be bridged by a participatory approach that places coastal communities at the center of creating and enacting climate change adaptations.

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Vulnerability of the Nigerian coast: An insight into sea level rise owing to climate change and anthropogenic activities

Cited by 34 publications

References 23 publications

Shoreline Change and Coastal Erosion in West Africa: A Systematic Review of Research Progress and Policy Recommendation

Shoreline Change and Coastal Erosion in West Africa: A Systematic Review of Research Progress and Policy Recommendation

Shoreline Delineation from Synthetic Aperture Radar (SAR) Imagery for High and Low Tidal States in Data-Deficient Niger Delta Region

Climate Change Impact and Adaptation: Lagoonal Fishing Communities in West Africa

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